/* =========================================================
   AHA COMFORTS — layout.css
   Containers, header/nav, footer, and section scaffolding.
   ========================================================= */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--section-pad);
  position: relative;
  isolation: isolate;
}

/* Default ivory sections — subtle interior lighting, not flat fill */
.section:not(.section--tint):not(.section--dark):not(.section--gallery)::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 42% at 92% 8%, rgba(226, 194, 125, 0.09), transparent 58%),
    radial-gradient(ellipse 45% 38% at 4% 88%, rgba(233, 220, 192, 0.28), transparent 55%);
  z-index: 0;
}

.section:not(.section--tint):not(.section--dark):not(.section--gallery)::after {
  content: '';
  position: absolute;
  inset: auto 8% 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-soft), transparent);
  pointer-events: none;
  z-index: 0;
}

.section > .container {
  position: relative;
  z-index: 1;
}

.section--tint {
  background:
    radial-gradient(ellipse 48% 36% at 12% 0%, rgba(226, 194, 125, 0.14), transparent 58%),
    var(--gradient-glow),
    linear-gradient(180deg, #F3ECDD 0%, #F1E9DA 55%, #EEE0C8 100%);
}

.section--tint::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 40% 30% at 88% 92%, rgba(201, 163, 95, 0.1), transparent 55%);
  z-index: 0;
}

.section--dark {
  background:
    radial-gradient(ellipse 55% 42% at 82% 8%, rgba(201, 163, 95, 0.16), transparent 58%),
    radial-gradient(ellipse 40% 36% at 8% 90%, rgba(140, 106, 61, 0.12), transparent 55%),
    var(--gradient-dark);
  color: var(--color-ivory-dim);
}

.section--dark::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 163, 95, 0.28), transparent);
  pointer-events: none;
}

.section--gallery {
  background:
    radial-gradient(ellipse 60% 45% at 50% -5%, rgba(226, 194, 125, 0.12), transparent 62%),
    linear-gradient(180deg, #FAF6EF 0%, #F3ECDD 100%);
  padding-top: calc(var(--section-pad) * 0.65);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-ivory-bright);
}

.section-head {
  max-width: 680px;
  margin-bottom: clamp(2.5rem, 5vw, var(--space-lg));
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head h2 {
  margin-top: var(--space-sm);
}

.section-head--center h2::after {
  content: '';
  display: block;
  width: 44px;
  height: 1px;
  margin: 1.35rem auto 0;
  background: var(--gradient-gold);
}

.section-head p {
  margin-top: var(--space-sm);
  font-size: var(--fs-lead);
  color: var(--color-charcoal-faint);
}

.section--dark .section-head p {
  color: rgba(250, 246, 239, 0.62);
}

/* ---------------------------------------------------------
   Site header — floating glass navigation
   --------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  padding: 1.15rem 0 0;
  background: transparent;
  transition: padding var(--dur-med) var(--ease-luxury);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  position: relative;
  z-index: 1;
  overflow: visible;
  padding-block: 0.45rem;
  border-radius: var(--radius-xl);
  background: rgba(23, 20, 17, 0.28);
  border: 1px solid rgba(255, 253, 249, 0.16);
  box-shadow: var(--shadow-nav);
  transition: background var(--dur-med) var(--ease-luxury),
              border-color var(--dur-med) var(--ease-luxury),
              box-shadow var(--dur-med) var(--ease-luxury),
              padding var(--dur-med) var(--ease-luxury);
}

@media (min-width: 861px) {
  .site-header .container {
    backdrop-filter: blur(18px) saturate(1.25);
    -webkit-backdrop-filter: blur(18px) saturate(1.25);
  }
}

.site-header.is-scrolled {
  padding-top: 0.65rem;
}

.site-header.is-scrolled .container {
  padding-block: 0.28rem;
  background: rgba(255, 253, 249, 0.82);
  border-color: rgba(233, 220, 192, 0.55);
  box-shadow: 0 18px 50px -28px rgba(38, 33, 29, 0.3);
}

@media (min-width: 861px) {
  .site-header.is-scrolled .container {
    backdrop-filter: blur(22px) saturate(1.3);
    -webkit-backdrop-filter: blur(22px) saturate(1.3);
  }
}

.site-header.is-dark-context .logo-mark,
.site-header.is-dark-context .nav-link {
  color: var(--color-ivory-bright);
}

.site-header.is-dark-context .nav-toggle span {
  background: var(--color-ivory-bright);
}

.site-header.is-scrolled.is-dark-context .logo-mark,
.site-header.is-scrolled.is-dark-context .nav-link,
.site-header.is-scrolled .nav-link {
  color: var(--color-charcoal);
}

.site-header.is-scrolled.is-dark-context .nav-toggle span,
.site-header.is-scrolled .nav-toggle span {
  background: var(--color-charcoal);
}

.site-header.is-dark-context:not(.is-scrolled) .nav-link.is-active {
  color: var(--color-champagne-mid);
}

.site-header.is-scrolled .nav-link.is-active,
.site-header.is-scrolled.is-dark-context .nav-link.is-active {
  color: var(--color-gold-deep);
}

.site-header.is-dark-context:not(.is-scrolled) .site-logo {
  filter: drop-shadow(0 4px 14px rgba(0, 0, 0, 0.35));
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-link {
  font-family: var(--font-button);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  color: var(--color-charcoal);
  position: relative;
  padding-block: 0.4rem;
  transition: color var(--dur-fast) var(--ease-luxury);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1.5px;
  background: var(--gradient-gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--dur-med) var(--ease-luxury);
  border-radius: var(--radius-pill);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-link.is-active { color: var(--color-gold-deep); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: var(--radius-pill);
  z-index: 60;
  transition: background var(--dur-fast) var(--ease-luxury);
}

.nav-toggle:hover {
  background: rgba(255, 253, 249, 0.1);
}

.site-header.is-scrolled .nav-toggle:hover {
  background: rgba(140, 106, 61, 0.08);
}

.nav-toggle span {
  height: 1.5px;
  width: 100%;
  background: var(--color-charcoal);
  border-radius: var(--radius-pill);
  transition: transform var(--dur-med) var(--ease-luxury), opacity var(--dur-fast);
  transform-origin: center;
}

/* ---------------------------------------------------------
   Footer
   --------------------------------------------------------- */

.site-footer {
  position: relative;
  background:
    radial-gradient(ellipse 50% 40% at 18% 0%, rgba(201, 163, 95, 0.16), transparent 58%),
    radial-gradient(ellipse 40% 30% at 92% 100%, rgba(140, 106, 61, 0.1), transparent 55%),
    var(--gradient-dark);
  color: rgba(250, 246, 239, 0.72);
  padding-block: var(--space-xl) var(--space-lg);
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 163, 95, 0.45), transparent);
  pointer-events: none;
}

.site-footer::after {
  content: '';
  position: absolute;
  width: min(640px, 90vw);
  height: 320px;
  left: 50%;
  bottom: -120px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(201, 163, 95, 0.12), transparent 68%);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(233, 220, 192, 0.14);
  position: relative;
}

.footer-col h4 {
  font-family: var(--font-button);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-champagne-mid);
  margin-bottom: var(--space-sm);
}

.footer-col ul li { margin-bottom: 0.7rem; }

.footer-col a { transition: color var(--dur-fast) var(--ease-luxury); }
.footer-col a:hover { color: var(--color-champagne-mid); }
.site-footer .btn-ghost { color: var(--color-champagne-mid); }
.site-footer .btn-ghost:hover { color: var(--color-gold-light); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  font-size: var(--fs-small);
  color: rgba(250, 246, 239, 0.45);
  flex-wrap: wrap;
  gap: var(--space-sm);
  position: relative;
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.footer-social a {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(233, 220, 192, 0.22);
  border-radius: 50%;
  transition: border-color var(--dur-fast) var(--ease-luxury),
              background var(--dur-fast) var(--ease-luxury),
              color var(--dur-fast) var(--ease-luxury),
              transform var(--dur-fast) var(--ease-luxury);
}

.footer-social a:hover {
  border-color: var(--color-gold);
  background: rgba(176, 141, 87, 0.18);
  color: var(--color-champagne-mid);
  transform: translateY(-2px);
}

/* ---------------------------------------------------------
   Page header (interior pages)
   --------------------------------------------------------- */

.page-header {
  padding-block: calc(var(--section-pad) + 3.25rem) var(--space-xl);
  background:
    radial-gradient(ellipse 60% 80% at 82% 12%, rgba(201, 163, 95, 0.2), transparent 58%),
    radial-gradient(ellipse 50% 40% at 10% 100%, rgba(140, 106, 61, 0.14), transparent 55%),
    var(--gradient-dark);
  color: var(--color-ivory);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 120%, rgba(226, 194, 125, 0.08), transparent 45%);
}

.page-header::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 2.4rem;
  width: 44px;
  height: 1px;
  transform: translateX(-50%);
  background: var(--gradient-gold);
}

.page-header + .section {
  margin-top: -1.5rem;
  padding-top: calc(var(--section-pad) + 1.5rem);
}

.page-header .eyebrow { color: var(--color-champagne-mid); }
.page-header .eyebrow::before { background: var(--gradient-gold); }
.page-header h1 { color: var(--color-ivory-bright); margin-top: var(--space-sm); }
.page-header p {
  margin-top: var(--space-sm);
  max-width: 560px;
  margin-inline: auto;
  color: rgba(250, 246, 239, 0.68);
}